severe
thunderstorm and tornado watch numbers to plot; watches are plotted only
if they are active during the time period specified with the DAY and
TIME keywords; you cannot use WATCH with the TYPE keyword (default=all
active watches during time period specified with DAY and TIME)

WIDth=

width

graphics
line width for county outlines and watch boxes (default=current GD command
setting)

WList=

YES

display
the watch list in the upper-left corner of the frame; the list includes
the watch number, the day of month, and the time it expires (default)

NO

do
not display the watch list

Remarks

If both watches
and warnings are active, the watches are plotted before the warnings, regardless
of which were issued first. The map is drawn after all the watches and warnings
are plotted.

Severe thunderstorm
and tornado watches are drawn as either a box or county outlines. If you use
PLOT=NBOX (the default), the watch number is plotted in the center of each
box. The number begins with a T, indicating tornado, or an S, indicating severe
thunderstorm. Winter storm warnings are always plotted as zone outlines.

Watches are
outlined in the tor, svr and win colors specified
with the COLOR keyword. Counties and zones under a warning are filled with
the tor, svr, win and bliz colors using
the shading specified with the FILL keyword, and are outlined with the toroutl, svroutl, winoutl and blizoutl colors
specified in the COLOR keyword. Flood/flash flood watches and warnings, and
snow advisories are filled with the fldwatch, fldwarn and snoadv colors
in a hatch pattern unless FILL=NONE is specified.

If you specify
a range with the DAY and TIME keywords, any bulletins active during the range
are plotted. For example, DAY=185 187 TIME=21 3 specifies a window from 21:00
UTC on day 185 through 03:00 UTC on day 187. If you specify a single day and
time, bulletins active at that day and time are plotted. The default is the
current day and time.

Canceled severe
thunderstorm and tornado watches are considered expired and are not displayed.
Canceled warnings and winter storm watches are displayed until the original
expiration time has passed.

The National Weather Service redefined winter weather bulletins
beginning 09 September 2008 (NWS SCN08-40) such that Snow Advisories (TYPE=SNOWADV)
are no longer issued; Winter Weather Advisories (TYPE=WINADV) were expanded
to include snow, blowing snow, and sleet; and Winter Storm Warnings (TYPE=WINWARN)
were expanded to include heavy snow and sleet. The TYPE=SNOWADV option was
left in this command so it's valid when using archive data.

Examples

WWDISP

This entry
plots all active severe thunderstorm watches and warnings, tornado watches
and warnings, winter storm watches and warnings, flood/flash flood watches
and warnings, blizzard warnings, and snow advisories on the current frame.
No map is drawn; the current frame's navigation is used.

WWDISP USA 4 TYPE=TORWATCH TORWARN

This entry
plots all active tornado watches and warnings on a map of the United States
on frame 4.

WWDISP TX COLOR=5 4 6 6 TYPE=SEVWATCH SEVWARN TORWATCH TORWARN

This entry
plots all active severe thunderstorm and tornado watches and warnings on a
map of Texas on the current frame. The tornado watches and warnings are plotted
in graphics color level 5. The severe thunderstorm watches and warnings are
plotted in graphics color level 4. The outlines of counties with warnings are
displayed in graphics color level 6.

WWDISP MID WATCH=490 492 PLOT=COUNTY

This entry
plots severe thunderstorm or tornado watches 490, 491 and 492 as county outlines
on a map of the Midwest. The watches are plotted only if they are currently
active. If they are no longer active, you must use the DAY and TIME keywords
to specify the day and time when they were active.

WWDISP USA DAY=2003115 2003119 TIME=0 23:59

This entry
plots all severe thunderstorm watches and warnings, tornado watches and warnings,
winter storm watches and warnings, flood/flash flood watches and warnings,
blizzard warnings, and snow advisories that were active on days 2003115 through
2003119 on a map of the United States.

The first entry
displays the most recent image in dataset GOES8/VIS on the current frame with
Buffalo, New York, at the center, and includes a high-resolution map. The second
entry uses the image's navigation to plot all winter storm and blizzard warnings
active between 18 and 23:59 UTC on day 1998361. Every sixth pixel in the zones
under a warning is filled, producing a transparent effect that allows most
of the satellite image to be seen.